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What is Transponder Failure?

Transponder Failure The aircraft’s transponder is not transmitting, impacting radar identification and requiring ATC notification and alternate procedures.

Source: ICAO Doc 9432, FAA PCG

How is “Transponder Failure” Used in Practice?

Transponder failure reported, requesting alternate identification procedure.

Certification Exam Relevance

ICAO Level 4ICAO Level 5ICAO Level 6EASA FCL.055

Who Needs to Know This Term?

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

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Frequently Asked Questions

What is Transponder Failure?

The aircraft’s transponder is not transmitting, impacting radar identification and requiring ATC notification and alternate procedures.

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